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[103.229.16.4]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-2a0993ab61dsm118846515ad.46.2025.12.16.22.51.17 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 16 Dec 2025 22:51:19 -0800 (PST) From: Zhongqiu Han To: andersson@kernel.org, mathieu.poirier@linaro.org, corbet@lwn.net, rusty@rustcorp.com.au, ohad@wizery.com Cc: linux-remoteproc@vger.kernel.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, zhongqiu.han@oss.qualcomm.com Subject: [PATCH 1/5] rpmsg: Replace sprintf() with sysfs_emit() in sysfs show Date: Wed, 17 Dec 2025 14:51:08 +0800 Message-ID: <20251217065112.18392-2-zhongqiu.han@oss.qualcomm.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20251217065112.18392-1-zhongqiu.han@oss.qualcomm.com> References: <20251217065112.18392-1-zhongqiu.han@oss.qualcomm.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Authority-Analysis: v=2.4 cv=VLjQXtPX c=1 sm=1 tr=0 ts=694252e9 cx=c_pps a=cmESyDAEBpBGqyK7t0alAg==:117 a=nuhDOHQX5FNHPW3J6Bj6AA==:17 a=wP3pNCr1ah4A:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=EUspDBNiAAAA:8 a=zeoL4EY6mI-QDyTLeegA:9 a=1OuFwYUASf3TG4hYMiVC:22 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUxMjE3MDA1MyBTYWx0ZWRfX9xbi7y7R0tr9 Hf/NwuF0OjkyZRZIbfPqwTa1ko7PUIh7pV8GTu+0WYIB9ehN3TV+IJJe1LPENKll+lLru4FIhpZ tcYUDwN0ECazQHuPNu9CE3Ag5DGWKf69gg0wqRN/z2Drwvw1fCq9E5S0dUaXmq5F+SqgGn8Jdnw CuHROVIYTSWHoxu4JkOCBn5WUjk5B47ouXSfVjlo5u+4sabYOeTsw7sbLDhnVXOdblOznlXaMtF FXRUnRnUOSahb2M2EJrsyPOnAoZozgpAmYrTC4VD4mcK4Pm1r1xFyUd/HBPkoEQzCU6Xb+l3app Iw/WotpIRcOt8BHZOQZefn8ddCAeyHEFkvSGZEv0bvKdQNiBpy7EFITO88Yy6DiRr11L4sGTVBW ifBL8GGRZKPN/9PQs27FElPQkf4IDQ== X-Proofpoint-ORIG-GUID: zCnfioMR-2Qstgd32DFSgWACJugWwEPP X-Proofpoint-GUID: zCnfioMR-2Qstgd32DFSgWACJugWwEPP X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1121,Hydra:6.1.9,FMLib:17.12.100.49 definitions=2025-12-17_01,2025-12-16_05,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 adultscore=0 suspectscore=0 bulkscore=0 malwarescore=0 priorityscore=1501 impostorscore=0 clxscore=1015 lowpriorityscore=0 phishscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2510240001 definitions=main-2512170053 Content-Type: text/plain; charset="utf-8" Use sysfs_emit() instead of sprintf() in sysfs attribute show functions. sysfs_emit() is the recommended API for sysfs output as it provides buffer overflow protection and proper formatting. No functional changes. Signed-off-by: Zhongqiu Han Reviewed-by: Chris Lew --- drivers/rpmsg/qcom_smd.c | 2 +- drivers/rpmsg/rpmsg_char.c | 6 +++--- drivers/rpmsg/rpmsg_core.c | 4 ++-- 3 files changed, 6 insertions(+), 6 deletions(-) diff --git a/drivers/rpmsg/qcom_smd.c b/drivers/rpmsg/qcom_smd.c index 42594f5ee438..2793096aba45 100644 --- a/drivers/rpmsg/qcom_smd.c +++ b/drivers/rpmsg/qcom_smd.c @@ -1458,7 +1458,7 @@ static ssize_t rpmsg_name_show(struct device *dev, { struct qcom_smd_edge *edge =3D to_smd_edge(dev); =20 - return sprintf(buf, "%s\n", edge->name); + return sysfs_emit(buf, "%s\n", edge->name); } static DEVICE_ATTR_RO(rpmsg_name); =20 diff --git a/drivers/rpmsg/rpmsg_char.c b/drivers/rpmsg/rpmsg_char.c index 96fcdd2d7093..3287e7941c8c 100644 --- a/drivers/rpmsg/rpmsg_char.c +++ b/drivers/rpmsg/rpmsg_char.c @@ -365,7 +365,7 @@ static ssize_t name_show(struct device *dev, struct dev= ice_attribute *attr, { struct rpmsg_eptdev *eptdev =3D dev_get_drvdata(dev); =20 - return sprintf(buf, "%s\n", eptdev->chinfo.name); + return sysfs_emit(buf, "%s\n", eptdev->chinfo.name); } static DEVICE_ATTR_RO(name); =20 @@ -374,7 +374,7 @@ static ssize_t src_show(struct device *dev, struct devi= ce_attribute *attr, { struct rpmsg_eptdev *eptdev =3D dev_get_drvdata(dev); =20 - return sprintf(buf, "%d\n", eptdev->chinfo.src); + return sysfs_emit(buf, "%d\n", eptdev->chinfo.src); } static DEVICE_ATTR_RO(src); =20 @@ -383,7 +383,7 @@ static ssize_t dst_show(struct device *dev, struct devi= ce_attribute *attr, { struct rpmsg_eptdev *eptdev =3D dev_get_drvdata(dev); =20 - return sprintf(buf, "%d\n", eptdev->chinfo.dst); + return sysfs_emit(buf, "%d\n", eptdev->chinfo.dst); } static DEVICE_ATTR_RO(dst); =20 diff --git a/drivers/rpmsg/rpmsg_core.c b/drivers/rpmsg/rpmsg_core.c index 96964745065b..bcfd17e5309e 100644 --- a/drivers/rpmsg/rpmsg_core.c +++ b/drivers/rpmsg/rpmsg_core.c @@ -348,7 +348,7 @@ field##_show(struct device *dev, \ { \ struct rpmsg_device *rpdev =3D to_rpmsg_device(dev); \ \ - return sprintf(buf, format_string, rpdev->path); \ + return sysfs_emit(buf, format_string, rpdev->path); \ } \ static DEVICE_ATTR_RO(field); =20 @@ -395,7 +395,7 @@ static ssize_t modalias_show(struct device *dev, if (len !=3D -ENODEV) return len; =20 - return sprintf(buf, RPMSG_DEVICE_MODALIAS_FMT "\n", rpdev->id.name); + return sysfs_emit(buf, RPMSG_DEVICE_MODALIAS_FMT "\n", rpdev->id.name); } static DEVICE_ATTR_RO(modalias); =20 --=20 2.43.0